The Twins claimed Anderson off waivers from the Red Sox on Saturday and optioned him to Triple-A St. Paul.
Boston designated Anderson for assignment Monday, but he'll end up back on a new organization's 40-man roster after being picked up by Minnesota. The 26-year-old righty has given up three runs in eight major-league innings this season but owns a 4.81 ERA and 1.38 WHIP over 58 frames in the minors.